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I have an 06 Audi A3 2.0T Sportback with just over 105k miles; recently replaced the thermostat, spark plugs and coil packs. Other than being in need of some new brakes and a bit of cosmetic love, she's running strong.
I had the same exact car with same exact problem. I changed the thermostat once and it fixed it for about a year. The issue came back and I changed again and it fixed it again... So I'd say get an OEM one if you can.
our 2009 CRV was taking a long time to get to operating temperature and then fluctuating a lot while driving. a new thermostat fixed it.
Don\u2019t listen to these people I have an 08 ex Sam problem replaced thermostat 2 weeks ago in 15 minutes problem is gone
After getting a P0128 code and replacing the Tstat with an OEM equivalent from a parts house and my code coming back and then actually buying the OEM straight from the dealer fixing my code, I’m hesitant on what I should really put in my car since it seems to be sensitive to parts as well. I remember buying Tstats from AutoZone and never being a problem before.
Not the water pump but I just had my thermostat replaced under the extended warranty. I was slowly losing coolant with no discernable leak.
I just got this done and Audi quoted me $2500 for just the thermostat. Mine was covered by the extended warranty Audi has on all water pumps leaks.
Recently had the exact same issue on a 14 a6 ended up being a DOA t stat I compared the shaft length on the new t start to the 2nd new t stay and sure enough it protruded out about a mm further just enough to not seal properly causing the over cooling after the swap no more issues.
Had this happen to our 2018 Q5 a few months back, 35k miles on the SUV. Thermostat issue plus some other stuff.
I have a 2015 sedan and I’ve got 192,000 km and owned it since brand new and I’ve had that happen and changed the thermostat twice, just make sure you get OEM Honda thermostat and coolant as it takes a certain type. Make sure you
Burp the cooling system of all air and make sure you add enough coolant to the radiator and overflow, it’s fairly common for the thermostats to fail
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If choosing thermostat across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.
We compare thermostat across these categories:
In March 2026 on PartReview, thermostat OEM Honda were overall better than OEM Audi.
Thermostat OEM Audi and OEM Honda were equally popular according to data in March 2026.
By vote balance, thermostat OEM Honda surpassed OEM Audi:
By number of reviews, thermostat OEM Audi surpassed OEM Honda:
In March 2026, according to PartReview, thermostat OEM Honda led more car-specific ratings than OEM Audi:
OEM Honda are chosen by owners of cars such as: Honda Civic, and others.
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For example, comparisons of thermostat OEM Audi with: MotoRad, Wahler, OEM Volkswagen, Mahle, OEM Mazda, MOPAR, MISHIMOTO, Gates, OEM BMW, OEM Nissan.
Also available: comparisons of thermostat OEM Honda with: MotoRad, Wahler, OEM Volkswagen, Mahle, OEM Mazda, MOPAR, MISHIMOTO, Gates, OEM BMW, OEM Nissan.
You can also see who is better among other thermostat manufacturers: Wahler or MotoRad, OEM Volkswagen or MotoRad, Mahle or MotoRad, OEM Mazda or MotoRad, MOPAR or MotoRad.